National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Mostly Cloudy

80°F

27°C

Humidity 64%
Wind Speed S 20 mph
Barometer 29.96 in (1013.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 3 Apr 11:56 am CDT
Extended Forecast for

Lockhart TX

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 88. South southeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 88 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69. South southeast wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 69 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 79. South southeast wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 79 °F

    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers. Mostly cloudy, with a high near 66. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 52. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Slight Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 69. Northeast wind 5 to 10 mph.

    High: 69 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 48. East northeast wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 72. North northeast wind 5 to 10 mph becoming east in the afternoon.

    High: 72 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 88. South southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69. South southeast wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Saturday
Showers and possibly a thunderstorm. High near 79. South southeast wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
A 30 percent chance of showers. Mostly cloudy, with a high near 66. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 52. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, with a high near 69. Northeast wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 48. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly cloudy, with a high near 72. North northeast wind 5 to 10 mph becoming east in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Mostly cloudy, with a high near 78.
Wednesday Night
Mostly cloudy, with a low around 59.
Thursday
A 20 percent chance of showers. Mostly cloudy, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
11:32 am CDT Apr 3, 2026
Forecast Valid:
12pm CDT Apr 3, 2026-6pm CDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation